Aftermarket Exhausts? - Page 17 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

old greg · 04-22-2012, 12:41 PM

Quote:

Originally Posted by Grip Ronin

lol it doesn't effect the flow? i mean its offers a passage for the fumes that is just a dead end

Precisely. If that passage were tangential to the flow, your logic would be correct and the resonator would create backpressure. But the passage is perpendicular to the flow, and since it is a dead end, as you rightly pointed out, it does not have any real effect on the flow of gasses through the exhaust tubing. When a pressure pulse travels past the opening, part of that pulse travels up the neck of the resonator, bounces off the inside of the chamber and returns to the exhaust tube. The resonator chamber and neck are designed such that the returning pulse will cause destructive interference with a very narrow range of sound frequencies that would otherwise cause drone.

Grip Ronin · 04-22-2012, 10:22 PM

Quote:

Originally Posted by old greg

Precisely. If that passage were tangential to the flow, your logic would be correct and the resonator would create backpressure. But the passage is perpendicular to the flow, and since it is a dead end, as you rightly pointed out, it does not have any real effect on the flow of gasses through the exhaust tubing. When a pressure pulse travels past the opening, part of that pulse travels up the neck of the resonator, bounces off the inside of the chamber and returns to the exhaust tube. The resonator chamber and neck are designed such that the returning pulse will cause destructive interference with a very narrow range of sound frequencies that would otherwise cause drone.

oh i think i see what you saying. so any returning sound pulses can enter the other chamber instead of clashing with another pulse on its way out?

uspspro · 04-23-2012, 09:18 PM

I noticed an awful bend in the mid-pipe just below the rear end, on the stock exhaust. It seems to be notched for clearance, but the rear end should not move in a car with IRS.

I like the HKS Legamax, but would definitely get the "cat back" over the "axle back"

Looks like the axle back will MSRP at $1150 in the US and $1500 for the cat back. It's worth $350 to get that full length mid-pipe (IMHO).

Hopefully, some sales and group buys happen!

igorot · 04-23-2012, 11:38 PM

from the modified fr-s thread, i do like the burnt tips

uspspro · 04-24-2012, 12:19 AM

Awe man! I am usually a fan of Blitz Nur Spec... but I am NOT a fan of the burnt tips at all.

IMHO that was a major screw up.

Guff · 04-24-2012, 12:40 AM

Quote:

Originally Posted by uspspro

Awe man! I am usually a fan of Blitz Nur Spec... but I am NOT a fan of the burnt tips at all.

IMHO that was a major screw up.

Those are burnt everywhere, lol... Pretty distasteful, IMHO...

OrbitalEllipses · 04-24-2012, 12:51 AM

Burnt tips are gross, burnt exhausts are...grosser?

igorot · 04-24-2012, 01:06 AM

I dont think the muffler section is burnt at all, it seems to be the reflection off the ground

OrbitalEllipses · 04-24-2012, 01:22 AM

DERP

Guff · 04-24-2012, 01:49 AM

Well, pluck my pubic hair and call me Betsy, you're right!

They look pretty nice now!!!

dookie11 · 04-25-2012, 01:29 PM

I do like those black wheels though. Good amount of spokes: not too few, not too many.

Subaruwrxfan · 04-25-2012, 03:20 PM

Gah...need...sound...clips.

Gardus@Supersprint · 04-26-2012, 03:18 AM

The Blitz system looks like all the other Taiwan/China made products...so the sound will be the same.
Usual pressed lip muffler (not very good for leaks) and burnt tips...not my taste.

toxicdrift · 04-26-2012, 04:19 AM

is there any jap manufacturer thats making a made in japan exhaust then?

04-25-2012, 01:29 PM	#235
dookie11 Senior Member Join Date: Aug 2010 Drives: Girls crazy with his booty Location: SoCal Posts: 1,123 Thanks: 373 Thanked 63 Times in 41 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	I do like those black wheels though. Good amount of spokes: not too few, not too many. __________________

04-25-2012, 03:20 PM	#236
Subaruwrxfan Senior Member Join Date: Jan 2012 Drives: 2015 Mustang EcoBoost Location: Pittsburgh Posts: 796 Thanks: 274 Thanked 195 Times in 89 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	Gah...need...sound...clips. __________________ Check out my BRZ videos on my YouTube page: youtube.com/subaruwrxfan

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04-23-2012, 09:18 PM	#227
uspspro Senior Member Join Date: Mar 2012 Drives: DGM BRZ, MR-S 3.5L V6 swap (sold) Location: Bay Area, CA Posts: 602 Thanks: 28 Thanked 188 Times in 121 Posts Mentioned: 1 Post(s) Tagged: 1 Thread(s)	I noticed an awful bend in the mid-pipe just below the rear end, on the stock exhaust. It seems to be notched for clearance, but the rear end should not move in a car with IRS. I like the HKS Legamax, but would definitely get the "cat back" over the "axle back" Looks like the axle back will MSRP at $1150 in the US and $1500 for the cat back. It's worth $350 to get that full length mid-pipe (IMHO). Hopefully, some sales and group buys happen!

04-23-2012, 11:38 PM	#228
igorot Sneakerhead Join Date: Nov 2011 Drives: 2003 Honda Civic Si Location: Dallas, TX Posts: 327 Thanks: 16 Thanked 51 Times in 31 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	from the modified fr-s thread, i do like the burnt tips

04-24-2012, 12:19 AM	#229
uspspro Senior Member Join Date: Mar 2012 Drives: DGM BRZ, MR-S 3.5L V6 swap (sold) Location: Bay Area, CA Posts: 602 Thanks: 28 Thanked 188 Times in 121 Posts Mentioned: 1 Post(s) Tagged: 1 Thread(s)	Awe man! I am usually a fan of Blitz Nur Spec... but I am NOT a fan of the burnt tips at all. IMHO that was a major screw up.

04-24-2012, 12:51 AM	#231
OrbitalEllipses Banned Join Date: Jan 2012 Drives: Attitude Location: MD Posts: 10,046 Thanks: 884 Thanked 4,889 Times in 2,902 Posts Mentioned: 123 Post(s) Tagged: 4 Thread(s)	Burnt tips are gross, burnt exhausts are...grosser?

04-24-2012, 01:06 AM	#232
igorot Sneakerhead Join Date: Nov 2011 Drives: 2003 Honda Civic Si Location: Dallas, TX Posts: 327 Thanks: 16 Thanked 51 Times in 31 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I dont think the muffler section is burnt at all, it seems to be the reflection off the ground

04-24-2012, 01:22 AM	#233
OrbitalEllipses Banned Join Date: Jan 2012 Drives: Attitude Location: MD Posts: 10,046 Thanks: 884 Thanked 4,889 Times in 2,902 Posts Mentioned: 123 Post(s) Tagged: 4 Thread(s)	DERP

04-26-2012, 03:18 AM	#237
Gardus@Supersprint Banned Join Date: Nov 2011 Drives: Clio TCE Location: Mantova - Italy Posts: 494 Thanks: 17 Thanked 154 Times in 70 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	The Blitz system looks like all the other Taiwan/China made products...so the sound will be the same. Usual pressed lip muffler (not very good for leaks) and burnt tips...not my taste.

04-26-2012, 04:19 AM	#238
toxicdrift Member Join Date: Jan 2012 Drives: Suzuki Carry Location: India Posts: 33 Thanks: 1 Thanked 3 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	is there any jap manufacturer thats making a made in japan exhaust then?

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